The Iron Cutting Knife and the Diamond Cutting Knife can be used as a weapon too!

The recipes are simple Shapeless recipes. Put your Knife/Mortar together with a vanilla Item/Block to uncraft it. You only get 1 type of the ingredients back. (mostly the most expensive one).

Here are some examples:

You can also use your mortal/knife to increase the output of normal recipes:

There are some Recipes to create new items with the mortar/knife too:

Some Recipes with the Mortar are only working with the Reinforced Mortar and Pestle! But there are no extra Recipes for the Diamond Cutting Knife.

The Reinforced Mortar and Pestle and the Diamond Knife haven’t only a better Durability, than their normal counterparts. They also give you an increased amount of output. The Output of those tools is mostly the same amount of items, you have used to craft the recycable item:

These are only examples! There are much more “uncrafting” recipes in this mod!